PC Crashes every few seconds

May 17, 2022
Hello :)

I have a major problem with my new build. I installed a few new parts today and now my pc constantly crahes on startup.
Here's my setup:
Mainboard: MSI B550M PRO-VDH Wifi (new)
Graphics: Nvidia Geforce 3060 Ti
CPU: AMD Ryzen 7 5700G

+1TB M.2 + 1TB HDD + 1TB SSD + bequiet CPU cooler (new) + beQuiet Case (new)

Before I upgraded, I had the HP Victus 15L and the Graphics Card and CPU is from that PC. I also had crashing problems with that one, but not that hard and they somehow fixed themselfs after a while, so I forgot about that. At that time I blamed the PSU for it, because I thought it could not provide enough power to the components.

Now, after the upgrade I have a picture until the Windows-Login Screen. After that my PC either restarts or I'll get no picture at all. Same thing happens, when I am in the bios. When I'll go into safe boot, I don't have this problem, but somehow can't login my "PIN is not available". Sadly it also restarts, when I try to boot from a USB-Device.

Already tried to start with different RAM Sticks and without a Graphics Card, but without any success. Sadly I don't have any other CPU to test out.

Hoping you can help me somehow, NIcolai